reformer

Short definition from Wiktionary

Noun

1. 1
   One who reforms, or who works for reform.
2. 2
   One who was involved in the Reformation.
3. 3
   A device which converts hydrocarbons into a hydrogen-rich mixture of gases.
4. 4
   A device used to convert petroleum refinery naphthas, typically having low octane ratings, into high-octane liquid products called reformates.
5. 5
   Alternative letter-case form of reformer (“one involved in the Reformation”).
6. 6
   A member of the Reform movement in 19th-century Canada.
7. 7
   A member of the Reform Party of Canada, which existed from 1987 to 2000.
8. 8
   A member or supporter of Reform UK.